Dendronotus lacteus ( Thompson, 1840 )

Korshunova, Tatiana, Bakken, Torkild, GrØtan, Viktor V., Johnson, Kjetil B., Lundin, Kennet & Martynov, Alexander, 2021, A synoptic review of the family Dendronotidae (Mollusca: Nudibranchia): a multilevel organismal diversity approach, Contributions to Zoology 90 (1), pp. 93-153 : 124-125

publication ID

https://doi.org/ 10.1163/18759866-BJA10014

DOI

https://doi.org/10.5281/zenodo.4623992

persistent identifier

https://treatment.plazi.org/id/03A8176E-0256-FFA2-21B1-FF56CAEC127E

treatment provided by

Carolina

scientific name

Dendronotus lacteus ( Thompson, 1840 )
status

 

Dendronotus lacteus ( Thompson, 1840) View in CoL

Fig. 7 View FIGURE 7

Tritonia lactea Thompson, 1840: 88–89 , Pl. 2, Fig. 3 View FIGURE 3 .

Dendronotus lacteus Eliot, 1910: 161 View in CoL ; Nordsieck, 1972: 68; Pruvot-Fol, 1954: 356; Thollesson, 1998: 191–193, Figs 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 ; Evertsen and Bakken, 2005: 18; Korshunovaet al., 2017: 2–7, Figs 1 View FIGURE 1 , 2.

not Becher, 1886: 14.

not Eliot, 1910:112 (= D. dalli View in CoL ).

= D. frondosus View in CoL auct. non Ascanius, 1774.

Extended diagnosis. Body relatively narrow. Four to eight pairs of branched dorsolateral appendages which in adults commonly show specific “curly” patternthoughotherspecimens with more “typical” for genus Dendronotus elongated appendages may occur. Four to ten oral veil appendages. Four to six appendages (inetrnal middle and posterior ones longest) of rhinophoral stalks. Lateral papilla of rhinophoral sheaths present. Rhinophores with 10–14 lamellae. At least more than 15 lip papillae.Basalcolourfromuniformlydarkredto uniform white, often with small brownish dots. Redddish and brownish specimens may have white stripes between cerata, white specimens milky, non-transparent in appearance. Dorsal processes of jaws inclined posteriorly at approximately 55–60° to the longitudinal axis of the jaw body and 0.52 of its length. Masticatory processes possibly bear denticles and ridge-like structures. Radula with up to 43 rows of teeth. Central tooth with up to 40–50 small denticles (commonly smaller), often with peculiar ribs, never completely smooth. Up to 16 lateral teeth with up to five denticles. Ampulla moderately narrow with several windings or folded loops. Bursa copulatrix large, rounded to oval. Seminal receptaculum small placed distally at considerable distance from the vaginal opening. Prostate discoidwith a range from 12 to morethan 30 alveolar glands. The vas deferens is relatively long in length, penis relatively long, bent. Body length up to 150 mm.

Distribution. North Atlantic and Arctic (eastern limit at least Laptev Sea, Russia).

Bathymetry. From circa 5 to 427 m depth; commonat shallow, subtidal depthsat around 10– 20 m.

Remarks. Dendronotus lacteus together with D. frondosus and D. europaeus form a species complex that is difficult to distinguish based on external characteristics, but in which it is still possible to find fine-scale morphological differences. In contrast, the radulae of these three species demonstrate distinctly different patterns ( Korshunova et al., 2017b).

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Nudibranchia

Family

Dendronotidae

Genus

Dendronotus

Loc

Dendronotus lacteus ( Thompson, 1840 )

Korshunova, Tatiana, Bakken, Torkild, GrØtan, Viktor V., Johnson, Kjetil B., Lundin, Kennet & Martynov, Alexander 2021
2021
Loc

Dendronotus lacteus

Korshunova, T. & Martynov, A. & Picton, B. 2017: 2
Evertsen, J. & Bakken, T. 2005: 18
Thollesson, M. 1998: 191
Nordsieck, F. 1972: 68
Pruvot-Fol, A. 1954: 356
Eliot, C. 1910: 161
1910
Loc

Tritonia lactea

Thompson, W. 1840: 89
1840
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